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GB117311A
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A Bearing Instrument for Ascertaining the Offshore Distance.
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GB117141A
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An Improved Method of Suspension of Compass Bowls and other Instruments Hung in Gimbals, such as Chronometers and Barometers.
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GB109674A
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Improved Course-finder Protractor.
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GB191106571A
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An Improvement in Compasses.
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GB191101572A
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Improvements in Depth Recorders.
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GB190914099A
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An Improvement in Artificial Horizons.
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US971189A
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Artificial horizon.
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GB190814285A
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An Improvement in Navigational Sounding Tubes.
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US928191A
|
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Depth-recorder.
|
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GB190724055A
|
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An Improved Artificial Horizon for use at Sea or Elsewhere
|
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GB190723875A
|
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Improvements in Depth-recorders.
|
|
GB190723470A
|
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An Improvement in Sounding Machines
|
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GB190715493A
|
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Improvements in Ships' Compasses
|
|
GB190714308A
|
|
Improvements in Navigational Sounding Tubes
|
|
GB190706440A
|
|
Improvements in Navigational Sounding Machines
|
|
GB190609067A
|
|
Improvements in Compass Course Correctors and similar Instruments.
|
|
GB190606356A
|
|
Improvements in Parallel Rulers.
|
|
GB190505188A
|
|
Improvements in Marine and like Sounding Apparatus.
|
|
GB190408354A
|
|
Improvements in Navigational Sounding Apparatus.
|
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US787030A
|
|
Apparatus for taking soundings at sea.
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